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In the more efficient Castner lengthwise graphitization furnace, the items to be graphitized, e.g. rods, are heated directly by placing them lengthwise end-to-end in contact with the carbon electrodes so that current flows through them, and the surrounding granulated carbon acts as a thermal insulator, but otherwise the furnace is similar to ...
Diagram of a Castner lengthwise graphitization furnace. a - Mixture of Coke and Sand, b - Bricks, c - Carbon Electrodes, d - Refractory Material, e - Rods to Graphitize, f - Granulated Coke File usage
In 1903, the predecessor of ABP, ASEA (Allmänna Svenska Elektriska Aktiebolaget) in Sweden built the first induction channel furnace for foundry operations. In order to expand the know-how of the company and to consolidate its market position, ASEA decided to merge in 1988 with Brown Boveri from Switzerland and to form ABB (Asea Brown Boveri).
The floor of the furnace is mostly made of a different material from that of the wall, typically hard castable refractory to allow technicians to walk on its floor during maintenance. A furnace can be lit by a small pilot flame or in some older models, by hand. Most pilot flames nowadays are lit by an ignition transformer (much like a car's ...
The advantage of the induction furnace is a clean, energy-efficient and well-controlled melting process, compared to most other means of metal melting. Most modern foundries use this type of furnace, and many iron foundries are replacing cupola furnaces with induction furnaces to melt cast iron, as the former emit much dust and other pollutants ...
Reuters identified five chemical companies, in which five Western-sanctioned billionaires hold stakes, that provided more than 75% of the key chemicals shipped by rail to some of Russia's largest ...
Graphitization can be observed in various contexts. For example, it occurs naturally during the formation of certain types of coal or graphite in the Earth's crust.It can also be artificially induced during the manufacture of specific carbon materials, such as graphite electrodes used in fuel cells, nuclear reactors or metallurgical applications.
Justin Baldoni sued The New York Times over its story about Blake Lively's harassment claims. The lawsuit claims the Times relied on Lively's narrative and caused Baldoni damage.
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